Mouthguard



FIG. 1 is a top, rear view of a mouthguard showing a first embodiment of our new design;

FIG. 2 is a top, front view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a side view thereof;

FIG. 8 is a top, rear view of a mouthguard showing a second embodiment of our new design;

FIG. 9 is a top, front view thereof;

FIG. 10 is a top plan view thereof;

FIG. 11 is a bottom plan view thereof;

FIG. 12 is a front view thereof;

FIG. 13 is a rear view thereof;

FIG. 14 is a side view thereof;

FIG. 15 is a top, rear view of a mouthguard showing a third embodiment of our new design;

FIG. 16 is a top, front view thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is a front view thereof;

FIG. 20 is a rear view thereof; and,

FIG. 21 is a side view thereof.

The short dash-short dash broken lines in the figures illustrate portions of the mouthguard that form no part of the claimed design. The long dash-short dash broken lines in the figures represent the bounds of the claimed design. 

CLAIM The ornamental design for a mouthguard, as shown and described. 